Carbon-Supported PtRuRh Nano Particles as a Catalyst for Direct Ethanol Fuel Cells

摘要

Carbon-supported PtRuRh nano particles, PtRuRh/C, were prepared by an impregnation method as a new anode catalyst with a high activity for ethanol oxidation in a direct ethanol fuel cell (DEFC). PtRuRh(2:1:1)/C, of which the metal loading and the metal particle diameter was 40 wt% and 6.7 nm, respectively, with the metal composition of 2:1:1 for Pt:Ru:Rh, showed a higher oxidation current at a certain electrode potential compared to that of PtRu( 1:1 )/C and Pt/C prepared in a similar manner. The DEFC with PtRuRh(2:1:1)/C as the anode catalyst generated about a 1.5 times and 3 times higher electric power compared to that of PtRu(1:l)/C and Pt/C, respectively, with 2M ethanol.